Hitachi WJ200-001L, Instruction Manual

Page: 161 / 680

3

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(6) When the braking confirmation signal (BOK) has been assigned to an intelligent
input terminal (that is, when “

” is specified for one of “

” to “

”), the
inverter waits, after turning off the brake release signal, until the braking
confirmation is turned off at least for the Brake Wait Time for Confirmation (

)
without decelerating the motor. If the braking confirmation signal is not turned off
within the Brake Wait Time for Confirmation (

), the inverter trips with the
braking error signal (BER) output. When the braking confirmation signal (BOK)
has not been assigned to any intelligent input terminal, the Brake Wait Time for
Confirmation (

) is invalid. In such cases, the inverter proceeds to the operation
described in item (7) after the brake release signal is turned off.
(7) After the braking confirmation signal (or the brake release signal [when the BOK
signal function is disabled]) is turned off, the inverter waits for the Brake Wait Time
for Stopping (

), and then starts decelerating the motor down to 0Hz.
NOTE: The above timing chart shows the operation on the assumption that the braking
confirmation signal “

” (BOK) is assigned to one of the terminal 1 to 7 (

~

). If
the BOK signal is not assigned to any terminal, the Brake Wait Time for Acceleration
(

) begins when the brake release signal is turned on, and the Brake Wait Time for
Stopping (

) begins when the brake release signal is turned off.
When using the brake control function, assign the following signal functions to
intelligent input and output terminals as needed.

To input a signal indicating that the brake is released from the external brake to the
inverter, assign the braking confirmation signal (

: BOK) to one of the terminal 1~7
(

~

)

Assign the brake release signal (

: BRK), which is a brake-releasing command, to
one of the output terminal 11~12 (

~

). To output a signal when braking is
abnormal, assign the brake error signal (

: BER) to an output terminal.